1.0 2016-05-19 02:26:38 UTC 2026-05-14 19:53:15 UTC SODIUM METABISULFITE SmallMolecule Sodium metabisulfite is an inorganic compound with the chemical formula Na2O5S2 and an average molecular weight of 190.09 g/mol. SODIUM METABISULFITE belongs to the alkali metal dithionites, a subclass of alkali metal oxoanionic compounds within the inorganic compounds. It is further classified as a mixed metal/non-metal compound. This compound serves a wide variety of industrial roles and uses. It is utilized as a food preservative, preservative, antioxidant, and stabilizing agent. Additionally, it functions as an oxidizing agent, biocide, fragrance, dye, filler, and heat transferring agent. Sodium metabisulfite is found in or released from twelve recorded sources across several categories. In the realm of food, food processing, and cookware, it is associated with cellar tools, the preparation of malt, the preparation of vinegar, the preparation of wine or sparkling wine, and fermentation processes for beer, among two other sources. Within household cleaning and consumer products, it is found in bleaching agents and tobacco smoke filters. In the category of electrical and electronic equipment, it is present in power cables and electrically stimulated smoking devices. Finally, it is found in building and construction materials, specifically ceilings. Disodium disulphite Disulfurous acid, disodium salt Sodium disulfite Na2O5S2 190.09 189.89825401 disodium sulfinatosulfonate disodium metabisulfite 7681-57-4 [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O InChI=1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2 HRZFUMHJMZEROT-UHFFFAOYSA-L Inorganic compounds Mixed metal/non-metal compounds Alkali metal oxoanionic compounds Alkali metal dithionites Alkali metal dithionites Inorganic oxides Inorganic sodium salts Alkali metal dithionite Inorganic oxide Inorganic salt Inorganic sodium salt Detected and Not Quantified logp -1.6 logp -1.6 ChemAxon pka_strongest_acidic -2.7 ChemAxon iupac disodium sulfinatosulfonate ChemAxon average_mass 190.09 ChemAxon mono_mass 189.89825401 ChemAxon smiles [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O ChemAxon formula Na2O5S2 ChemAxon inchi InChI=1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2 ChemAxon inchikey HRZFUMHJMZEROT-UHFFFAOYSA-L ChemAxon polar_surface_area 97.33 ChemAxon refractivity 18.73 ChemAxon polarizability 9.14 ChemAxon rotatable_bond_count 1 ChemAxon acceptor_count 5 ChemAxon donor_count 0 ChemAxon physiological_charge -2 ChemAxon formal_charge 0 ChemAxon #<HealthEffect::ActiveRecord_Associations_CollectionProxy:0x00007f721ffecef8> DB15842 24347 57535322